| Journal: | Materials research |
| Database: | PERIÓDICA |
| System number: | 000312910 |
| ISSN: | 1516-1439 |
| Authors: | Figueiredo, Roberto Braga1 Aguilar, Maria Teresa Paulino Cetlin, Paulo Roberto Costa, Andre Luiz de Moraes2 Andrade, Margareth Spangler |
| Institutions: | 1Universidade Federal de Minas Gerais, Departamento de Engenharia Metalurgica e de Materiais, Belo Horizonte, Minas Gerais. Brasil 2Fundacao Centro Tecnologico de Minas Gerais, Belo Horizonte, Minas Gerais. Brasil |
| Year: | 2006 |
| Season: | Ene-Mar |
| Volumen: | 9 |
| Number: | 1 |
| Pages: | 101-106 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Nota breve o noticia |
| Approach: | Experimental |
| English abstract | Equal Channel Angular Pressing (ECAP) is the most prominent SPD (Severe Plastic Deformation) method for the production of ultrafine and nanostructured metals, and has been extensively employed and analyzed. This technique was applied to a Pb-4%Sb alloy at room temperature, in order to study its effect on a low melting point and multiphase metallic material. The material was subjected to effective strains higher than 9, after 8 passes of processing, where dynamic and static recrystallization are expected during and after each pass. This eliminates any grain refinement and allows the analysis only of the microstructural effects associated with second phase redistribution and eventual precipitate dissolution. ECAP followed route C, which eliminates structural alignment after each even ECAP pass, facilitating the study of the microstructural evolution. It is shown that three ECAP passes are necessary to completely break the lamellar structure of the as cast strucure and that antimony dissolves into the lead rich matrix. Dynamic recrystallization and structural changes reduce the material strength and change the flow curve format |
| Disciplines: | Ingeniería |
| Keyword: | Ingeniería de materiales, Ingeniería mecánica, Ingeniería metalúrgica, Aleaciones, Plomo, Antimonio, Microestructuras, Propiedades mecánicas |
| Keyword: | Engineering, Materials engineering, Mechanical engineering, Metallurgical engineering, Alloys, Lead, Antimony, Microstructures |
| Full text: | Texto completo (Ver HTML) |
